A former agent with Russia’s FSB security service, Colonel Skripal arrived in Britain in 2010 as part of a prisoner exchange, according to The Telegraph. Prior to that he was jailed in Moscow for spying for Britain, the British newspaper said.

"We see the problems that are generated by the Russian Federation in Europe and everything indicates that this is what we are dealing with in Britain,” Dworczyk told wpolityce.pl in an interview, when asked about the alleged attack in Britain.